EP2594741A3 - Diffuser, in particular for an axial flow machine - Google Patents

Diffuser, in particular for an axial flow machine Download PDF

Info

Publication number
EP2594741A3
EP2594741A3 EP12191495.6A EP12191495A EP2594741A3 EP 2594741 A3 EP2594741 A3 EP 2594741A3 EP 12191495 A EP12191495 A EP 12191495A EP 2594741 A3 EP2594741 A3 EP 2594741A3
Authority
EP
European Patent Office
Prior art keywords
diffuser
flow
axial flow
flow machine
sectional area
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.)
Withdrawn
Application number
EP12191495.6A
Other languages
German (de)
French (fr)
Other versions
EP2594741A2 (en
Inventor
Willy Heinz Hofmann
Armin Busekros
Thomas Peter Sommer
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.)
Ansaldo Energia Switzerland AG
Original Assignee
Ansaldo Energia Switzerland 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 Ansaldo Energia Switzerland AG filed Critical Ansaldo Energia Switzerland AG
Publication of EP2594741A2 publication Critical patent/EP2594741A2/en
Publication of EP2594741A3 publication Critical patent/EP2594741A3/en
Withdrawn legal-status Critical Current

Links

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
    • F01D9/00—Stators
    • F01D9/02—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles
    • 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
    • F01D1/00—Non-positive-displacement machines or engines, e.g. steam turbines
    • F01D1/02—Non-positive-displacement machines or engines, e.g. steam turbines with stationary working-fluid guiding means and bladed or like rotor, e.g. multi-bladed impulse steam turbines
    • 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
    • F01D25/16—Arrangement of bearings; Supporting or mounting bearings in casings
    • F01D25/162—Bearing supports
    • 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
    • F01D9/00—Stators
    • F01D9/02—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles
    • F01D9/04—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles forming ring or sector
    • 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
    • F05D2260/60—Fluid transfer
    • F05D2260/601—Fluid transfer using an ejector or a jet pump

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)

Abstract

The invention concerns a diffuser (20), in particular for an axial flow machine, preferably a stationary gas turbine, which diffuser (20) transforms from a ring channel (17) with a first cross sectional area into an outlet space (21) with a second, larger cross sectional area along a machine axis (31).
Improved efficiency is achieved in that the transition is effected in several steps (22a-c) and that an annular passage (29) is provided through which a gas flow is able to escape and to flow along the guiding surface (28) in the form of a Coanda flow (30).
EP12191495.6A 2011-11-17 2012-11-06 Diffuser, in particular for an axial flow machine Withdrawn EP2594741A3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102011118735A DE102011118735A1 (en) 2011-11-17 2011-11-17 DIFFUSER, ESPECIALLY FOR AN AXIAL FLOW MACHINE

Publications (2)

Publication Number Publication Date
EP2594741A2 EP2594741A2 (en) 2013-05-22
EP2594741A3 true EP2594741A3 (en) 2017-08-23

Family

ID=47215404

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12191495.6A Withdrawn EP2594741A3 (en) 2011-11-17 2012-11-06 Diffuser, in particular for an axial flow machine

Country Status (6)

Country Link
US (1) US20130129498A1 (en)
EP (1) EP2594741A3 (en)
JP (2) JP2013108498A (en)
CN (1) CN103122776B (en)
DE (1) DE102011118735A1 (en)
RU (1) RU2569015C2 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2896793B1 (en) 2014-01-21 2024-08-28 Ansaldo Energia Switzerland AG Method of operating a gas turbine assembly and the gas turbine assembly
EP2947283B1 (en) 2014-05-23 2017-01-11 GE Energy Products France SNC Thermal-acoustic insulation structure for the exhaust of a rotating machine
EP3023695A1 (en) * 2014-11-20 2016-05-25 Siemens Aktiengesellschaft Thermal energy machine
FR3029568B1 (en) * 2014-12-05 2016-11-18 Turbomeca PLENUM OF AIR SUPPLY
US10563543B2 (en) * 2016-05-31 2020-02-18 General Electric Company Exhaust diffuser
RU2632354C1 (en) * 2016-12-01 2017-10-04 Открытое акционерное общество "Научно-производственное объединение по исследованию и проектированию энергетического оборудования им. И.И. Ползунова" (ОАО "НПО ЦКТИ") Steam turbine double-flow low-pressure cylinder
US11291938B2 (en) 2016-12-16 2022-04-05 General Electric Technology Gmbh Coanda effect moisture separator system
KR102350377B1 (en) 2020-03-20 2022-01-14 두산중공업 주식회사 Anti-Separation Hub Structure for Exhaust Diffuser
US11840937B2 (en) 2021-12-17 2023-12-12 Pratt & Whitney Canada Corp. Diffuser nozzle for a gas turbine engine

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2637972A (en) * 1948-04-09 1953-05-12 Mcdonnell Aircraft Corp Afterburner for turbojet engines and the like
US5230656A (en) * 1992-08-05 1993-07-27 Carrier Corporation Mixer ejector flow distributor
US20110058939A1 (en) * 2009-06-02 2011-03-10 John Orosa Turbine exhaust diffuser with a gas jet producing a coanda effect flow control
US20110088379A1 (en) * 2009-10-15 2011-04-21 General Electric Company Exhaust gas diffuser

Family Cites Families (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA486078A (en) * 1950-04-27 1952-08-26 W. Kellal George Exit area control for jet engines
US2828603A (en) * 1948-04-09 1958-04-01 Westinghouse Electric Corp Afterburner for turbo jet engines and the like
DE1062066B (en) * 1952-10-15 1959-07-23 Nat Res Dev Device, especially for gas turbine systems for burning gaseous or vaporized fuel
CH484358A (en) * 1968-02-15 1970-01-15 Escher Wyss Ag Exhaust housing of an axial turbo machine
US3625630A (en) * 1970-03-27 1971-12-07 Caterpillar Tractor Co Axial flow diffuser
DE2558840C2 (en) * 1975-12-27 1983-03-24 Klein, Schanzlin & Becker Ag, 6710 Frankenthal Device to reduce cavitation wear
US4272955A (en) * 1979-06-28 1981-06-16 General Electric Company Diffusing means
EP0035838B1 (en) * 1980-03-10 1985-02-06 Rolls-Royce Plc Diffusion apparatus
SU1000558A1 (en) * 1981-04-03 1983-02-28 Донецкий Ордена Трудового Красного Знамени Политехнический Институт Diffusor
JPS58127120U (en) * 1982-02-23 1983-08-29 防衛庁技術研究本部長 Exit structure of high temperature gas exhaust pipe
SU1657672A1 (en) * 1986-07-28 1991-06-23 Производственное объединение "Невский завод" им.В.И.Ленина Diffuser of turbomachine
CH672004A5 (en) 1986-09-26 1989-10-13 Bbc Brown Boveri & Cie
US5110560A (en) * 1987-11-23 1992-05-05 United Technologies Corporation Convoluted diffuser
US4971768A (en) * 1987-11-23 1990-11-20 United Technologies Corporation Diffuser with convoluted vortex generator
US4923370A (en) * 1988-11-28 1990-05-08 Allied-Signal Inc. Radial turbine wheel
EP0491966B1 (en) 1990-12-10 1994-11-30 Asea Brown Boveri Ag Support device of a thermal turbomachine
US5487266A (en) * 1992-05-05 1996-01-30 General Electric Company Combustion control for producing low NOx emissions through use of flame spectroscopy
JP3564420B2 (en) * 2001-04-27 2004-09-08 三菱重工業株式会社 gas turbine
EP1262637A1 (en) * 2001-05-31 2002-12-04 ALSTOM (Switzerland) Ltd Gas turbine power plant and method therefor
JP4929217B2 (en) * 2008-03-28 2012-05-09 三菱重工業株式会社 Gas turbine, gas turbine intermediate shaft, and gas turbine compressor cooling method
US8061983B1 (en) * 2008-06-20 2011-11-22 Florida Turbine Technoligies, Inc. Exhaust diffuser strut with stepped trailing edge
US8313286B2 (en) * 2008-07-28 2012-11-20 Siemens Energy, Inc. Diffuser apparatus in a turbomachine
US8337153B2 (en) * 2009-06-02 2012-12-25 Siemens Energy, Inc. Turbine exhaust diffuser flow path with region of reduced total flow area
DE102010024091B4 (en) * 2010-06-17 2012-10-04 Esg Mbh mixer
EP2407638A1 (en) * 2010-07-15 2012-01-18 Siemens Aktiengesellschaft Exhaust gas diffuser for a gas turbine and method for operating a gas turbine with such an exhaust gas diffuser
US9109466B2 (en) * 2011-07-22 2015-08-18 The Board Of Trustees Of The Leland Stanford Junior University Diffuser with backward facing step having varying step height
PL220635B1 (en) * 2011-10-03 2015-11-30 Gen Electric Exhaust gas diffuser and a turbine
US20130091865A1 (en) * 2011-10-17 2013-04-18 General Electric Company Exhaust gas diffuser

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2637972A (en) * 1948-04-09 1953-05-12 Mcdonnell Aircraft Corp Afterburner for turbojet engines and the like
US5230656A (en) * 1992-08-05 1993-07-27 Carrier Corporation Mixer ejector flow distributor
US20110058939A1 (en) * 2009-06-02 2011-03-10 John Orosa Turbine exhaust diffuser with a gas jet producing a coanda effect flow control
US20110088379A1 (en) * 2009-10-15 2011-04-21 General Electric Company Exhaust gas diffuser

Also Published As

Publication number Publication date
US20130129498A1 (en) 2013-05-23
RU2012148919A (en) 2014-05-27
CN103122776B (en) 2016-02-10
DE102011118735A1 (en) 2013-05-23
EP2594741A2 (en) 2013-05-22
RU2569015C2 (en) 2015-11-20
JP6188885B2 (en) 2017-08-30
CN103122776A (en) 2013-05-29
JP2013108498A (en) 2013-06-06
JP2016180412A (en) 2016-10-13

Similar Documents

Publication Publication Date Title
EP2594741A3 (en) Diffuser, in particular for an axial flow machine
EP3106621A3 (en) Flow directing cover for engine component
EP2592252A3 (en) Gearbox deoiler with pre-pressuring component
EP2762682A3 (en) Axial turbine with meridionally divided turbine housing
EP2570641A3 (en) Fan case with thrust reverser cascade section, corresponding fan section and gas turbine engine
EP2725201A3 (en) Axial flow turbine
EP2551485A3 (en) Gas turbine engine with aft core driven fan section
EP1965030A3 (en) Rotor seal segment
EP2206886A3 (en) Transition piece for a gas turbine engine, corresponding gas turbine engine and manufacturing method
EP2543826A3 (en) Composite shroud
EP2589751A3 (en) Turbine last stage flow path
EP2628934A3 (en) Thermoelectric generator in turbine engine nozzles
EP2527739A3 (en) System and method for flow control in gas turbine engine
EP2586990A3 (en) Integrated case and stator
EP2520763A3 (en) Impeller
EP2410165A3 (en) Gas turbine with noise attenuating variable area fan nozzle
EP2559849A3 (en) Gas turbine engine seal assembly having flow-through tube
EP2554793A3 (en) Inter-turbine ducts with guide vanes of a gas turbine engine
EP2672078A3 (en) Deoiler seal
EP2653659A3 (en) Cooling assembly for a gas turbine system
EP2685065A3 (en) A gas turbine engine
EP2853694A3 (en) Steam turbine
EP2484871A3 (en) Turbomachine with a flow path having a circumferentially varying outer periphery
EP2733329A3 (en) Turbocharger and variable-nozzle assembly therefor
EP2778375A3 (en) Axial-flow turbine and power plant including the same

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: GENERAL ELECTRIC TECHNOLOGY GMBH

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: ANSALDO ENERGIA SWITZERLAND AG

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

RIC1 Information provided on ipc code assigned before grant

Ipc: F01D 9/02 20060101AFI20170714BHEP

Ipc: F01D 25/16 20060101ALI20170714BHEP

Ipc: F01D 1/02 20060101ALI20170714BHEP

Ipc: F01D 9/04 20060101ALI20170714BHEP

17P Request for examination filed

Effective date: 20180222

RBV Designated contracting states (corrected)

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20180523