EP0276448B1 - Dispositif d'échappement d'une turbine à gaz, constitué d'un diffuseur de jets - Google Patents

Dispositif d'échappement d'une turbine à gaz, constitué d'un diffuseur de jets Download PDF

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Publication number
EP0276448B1
EP0276448B1 EP87118618A EP87118618A EP0276448B1 EP 0276448 B1 EP0276448 B1 EP 0276448B1 EP 87118618 A EP87118618 A EP 87118618A EP 87118618 A EP87118618 A EP 87118618A EP 0276448 B1 EP0276448 B1 EP 0276448B1
Authority
EP
European Patent Office
Prior art keywords
turbine
exhaust
orifices
basket
diffuser
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.)
Expired - Lifetime
Application number
EP87118618A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0276448A1 (fr
Inventor
Jacques Rigault
Pierre Bonnet
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.)
Alstom Holdings SA
Original Assignee
Vibrachoc SAS
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 Vibrachoc SAS filed Critical Vibrachoc SAS
Publication of EP0276448A1 publication Critical patent/EP0276448A1/fr
Application granted granted Critical
Publication of EP0276448B1 publication Critical patent/EP0276448B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • 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
    • F15D1/02—Influencing flow of fluids in pipes or conduits
    • F15D1/04—Arrangements of guide vanes in pipe elbows or duct bends; Construction of pipe conduit elements for elbows with respect to flow, e.g. for reducing losses of flow
    • 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
    • F05D2200/00—Mathematical features
    • F05D2200/20—Special functions
    • F05D2200/23—Logarithm
    • 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
    • F05D2250/00—Geometry
    • F05D2250/10—Two-dimensional
    • F05D2250/19—Two-dimensional machined; miscellaneous
    • F05D2250/191—Two-dimensional machined; miscellaneous perforated

Definitions

  • the present invention relates to an exhaust device for a gas turbine, installed between the outlet of the rectifier stage of this turbine and an exhaust duct.
  • the object of the present invention is to ensure, at the outlet of the turbine, a better profile of the speeds of the exhaust gases.
  • This object is achieved by providing a diameter of the orifices which decreases logarithmically as one moves away from the turbine outlet.
  • the present invention relates to an exhaust device of a gas turbine, installed between the outlet of the rectifier stage of this turbine and an exhaust sheath, consisting of a jet diffuser basket whose axis is confused with that of the turbine, the section of the orifices in the circumference of this basket varying decreasingly as one moves away from the turbine outlet, characterized in that this section varies logarithmically.
  • an exhaust sheath 10 envelops the end of an exhaust tube 1 of a gas turbine.
  • Another tube 1A of this turbine allows the passage of a transmission shaft, and straightening vanes 5 are installed in the gas passage, between the tube 1 and the tube 1A.
  • This cylindrical basket or possibly conical, is closed by a profiled annular bottom 21 comprising a cuff 22 fitted on a tube 6.
  • the annular shape of this basket allows the transmission shaft of a single-shaft turbine passing through, and in this case, the the downstream end of the basket is closed by a crown 23.
  • This basket is pierced with orifices 25, the average diameter of the orifices and the perforation rate of this basket being defined as a function of the turbine characteristics.
  • orifices may not be distributed over the entire circumference of the basket, that is to say over the major part thereof, approximately 270 ° in order to protect a particular area, such as the bottom 10A of the sheath 10 , for example.
  • the diameters of the orifices have a variable section according to their position along the axis of the basket and the perforation is of the type with logarithmic variation to take into account both the dynamic pressure due to gas, the background effect, the residual thrust and natural jet rotation.
  • This log perforation is adapted to each type of turbine as a function of the flow rate of the annular turbine section and the length of the basket.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Control Of Turbines (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Supercharger (AREA)
  • Lasers (AREA)
  • Jet Pumps And Other Pumps (AREA)
EP87118618A 1986-12-18 1987-12-15 Dispositif d'échappement d'une turbine à gaz, constitué d'un diffuseur de jets Expired - Lifetime EP0276448B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8617760 1986-12-18
FR8617760A FR2612250B1 (fr) 1986-12-18 1986-12-18 Dispositif d'echappement d'une turbine a gaz, comportant un diffuseur de jets

Publications (2)

Publication Number Publication Date
EP0276448A1 EP0276448A1 (fr) 1988-08-03
EP0276448B1 true EP0276448B1 (fr) 1991-06-05

Family

ID=9342054

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87118618A Expired - Lifetime EP0276448B1 (fr) 1986-12-18 1987-12-15 Dispositif d'échappement d'une turbine à gaz, constitué d'un diffuseur de jets

Country Status (9)

Country Link
US (1) US4748805A (ja)
EP (1) EP0276448B1 (ja)
JP (1) JPH0681904B2 (ja)
CN (1) CN1007442B (ja)
BR (1) BR8706890A (ja)
CA (1) CA1279580C (ja)
DE (1) DE3770617D1 (ja)
FR (1) FR2612250B1 (ja)
IN (1) IN170768B (ja)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2261474B (en) * 1991-10-23 1994-06-22 Ruston Gas Turbines Ltd Gas turbine exhaust system
US5569196A (en) * 1992-07-21 1996-10-29 Advanced Cardiovascular Systems, Inc. Trackable intravascular catheter
DE4422700A1 (de) * 1994-06-29 1996-01-04 Abb Management Ag Diffusor für Turbomaschine
US5632142A (en) * 1995-02-15 1997-05-27 Surette; Robert G. Stationary gas turbine power system and related method
US6851514B2 (en) * 2002-04-15 2005-02-08 Air Handling Engineering Ltd. Outlet silencer and heat recovery structures for gas turbine
US7648564B2 (en) * 2006-06-21 2010-01-19 General Electric Company Air bypass system for gas turbine inlet
US7707818B2 (en) * 2008-02-11 2010-05-04 General Electric Company Exhaust stacks and power generation systems for increasing gas turbine power output
US8511984B2 (en) * 2009-10-16 2013-08-20 General Electric Company Gas turbine engine exhaust diffuser and collector
US20110236201A1 (en) * 2010-03-23 2011-09-29 Sumedhkumar Vyankatesh Shende Method and apparatus for radial exhaust gas turbine
CN101893021B (zh) * 2010-08-01 2012-09-26 王政玉 一种产生有序流的装置
JP5951187B2 (ja) 2011-03-29 2016-07-13 三菱重工業株式会社 タービン排気構造及びガスタービン
ITFI20120221A1 (it) * 2012-10-22 2014-04-23 Nuovo Pignone Srl "exhaust gas collector and gas turbine"
US20140348647A1 (en) * 2013-05-24 2014-11-27 Solar Turbines Incorporated Exhaust diffuser for a gas turbine engine exhaust system
US11162424B2 (en) * 2013-10-11 2021-11-02 Reaction Engines Ltd Heat exchangers
GB2600759A (en) * 2020-11-10 2022-05-11 Reaction Engines Ltd Guiding array

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3185252A (en) * 1957-07-29 1965-05-25 C W Lemmerman Inc Jet engine noise attenuator
US3195678A (en) * 1962-02-23 1965-07-20 Industrial Acoustics Co Aerodynamic coupling for jet noise suppressors
FR2059877A5 (ja) * 1970-07-30 1971-06-04 Prvni Brnenska Strojirna
US3688865A (en) * 1970-11-17 1972-09-05 Cloyd D Smith Jet engine noise suppressor
US3692140A (en) * 1971-04-05 1972-09-19 Cloyd D Smith Exhaust noise suppressor for gas turbine
US4180141A (en) * 1975-11-24 1979-12-25 Judd Frederick V H Distributor for gas turbine silencers
US4244441A (en) * 1979-07-31 1981-01-13 The Garrett Corporation Broad band acoustic attenuator

Also Published As

Publication number Publication date
IN170768B (ja) 1992-05-16
FR2612250B1 (fr) 1991-04-05
DE3770617D1 (de) 1991-07-11
CN1007442B (zh) 1990-04-04
US4748805A (en) 1988-06-07
CA1279580C (fr) 1991-01-29
EP0276448A1 (fr) 1988-08-03
JPH0681904B2 (ja) 1994-10-19
CN87101162A (zh) 1988-06-29
FR2612250A1 (fr) 1988-09-16
BR8706890A (pt) 1988-07-26
JPS63219825A (ja) 1988-09-13

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