SE8206769L - Smutsbortagnings- och pulsationsavtappningssystem for flektjetmotorer - Google Patents

Smutsbortagnings- och pulsationsavtappningssystem for flektjetmotorer

Info

Publication number
SE8206769L
SE8206769L SE8206769A SE8206769A SE8206769L SE 8206769 L SE8206769 L SE 8206769L SE 8206769 A SE8206769 A SE 8206769A SE 8206769 A SE8206769 A SE 8206769A SE 8206769 L SE8206769 L SE 8206769L
Authority
SE
Sweden
Prior art keywords
pulsation
removal
draining system
jet motors
fleet
Prior art date
Application number
SE8206769A
Other languages
Unknown language ( )
English (en)
Other versions
SE8206769D0 (sv
SE453417B (sv
Inventor
R J Monhardt
L Kudlacik
J P Nikkanen
J Niiler
Original Assignee
United Technologies Corp
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 United Technologies Corp filed Critical United Technologies Corp
Publication of SE8206769D0 publication Critical patent/SE8206769D0/sv
Publication of SE8206769L publication Critical patent/SE8206769L/sv
Publication of SE453417B publication Critical patent/SE453417B/sv

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
    • F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
    • F02C7/04—Air intakes for gas-turbine plants or jet-propulsion plants
    • F02C7/05—Air intakes for gas-turbine plants or jet-propulsion plants having provisions for obviating the penetration of damaging objects or particles
    • F02C7/052—Air intakes for gas-turbine plants or jet-propulsion plants having provisions for obviating the penetration of damaging objects or particles with dust-separation devices
    • 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
    • F01D25/32—Collecting of condensation water; Drainage ; Removing solid particles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
    • F02C9/00—Controlling gas-turbine plants; Controlling fuel supply in air- breathing jet-propulsion plants
    • F02C9/16—Control of working fluid flow
    • F02C9/18—Control of working fluid flow by bleeding, bypassing or acting on variable working fluid interconnections between turbines or compressors or their stages
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02K—JET-PROPULSION PLANTS
    • F02K3/00—Plants including a gas turbine driving a compressor or a ducted fan
    • F02K3/02—Plants including a gas turbine driving a compressor or a ducted fan in which part of the working fluid by-passes the turbine and combustion chamber
    • F02K3/04—Plants including a gas turbine driving a compressor or a ducted fan in which part of the working fluid by-passes the turbine and combustion chamber the plant including ducted fans, i.e. fans with high volume, low pressure outputs, for augmenting the jet thrust, e.g. of double-flow type
    • F02K3/075—Plants including a gas turbine driving a compressor or a ducted fan in which part of the working fluid by-passes the turbine and combustion chamber the plant including ducted fans, i.e. fans with high volume, low pressure outputs, for augmenting the jet thrust, e.g. of double-flow type controlling flow ratio between flows
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
    • F04D27/02—Surge control
    • F04D27/0207—Surge control by bleeding, bypassing or recycling fluids
    • F04D27/0215—Arrangements therefor, e.g. bleed or by-pass valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
    • F04D27/02—Surge control
    • F04D27/0207—Surge control by bleeding, bypassing or recycling fluids
    • F04D27/023—Details or means for fluid extraction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/52—Casings; Connections of working fluid for axial pumps
    • F04D29/54—Fluid-guiding means, e.g. diffusers
    • F04D29/541—Specially adapted for elastic fluid pumps
    • F04D29/545—Ducts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/70—Suction grids; Strainers; Dust separation; Cleaning

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Sustainable Development (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Details Or Accessories Of Spraying Plant Or Apparatus (AREA)
  • Jet Pumps And Other Pumps (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
SE8206769A 1981-12-14 1982-11-26 Avtappningsanordning for en flektmotor SE453417B (sv)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/330,760 US4463552A (en) 1981-12-14 1981-12-14 Combined surge bleed and dust removal system for a fan-jet engine

Publications (3)

Publication Number Publication Date
SE8206769D0 SE8206769D0 (sv) 1982-11-26
SE8206769L true SE8206769L (sv) 1983-06-15
SE453417B SE453417B (sv) 1988-02-01

Family

ID=23291206

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8206769A SE453417B (sv) 1981-12-14 1982-11-26 Avtappningsanordning for en flektmotor

Country Status (7)

Country Link
US (1) US4463552A (sv)
JP (1) JPS58106134A (sv)
DE (1) DE3243279A1 (sv)
FR (1) FR2518169B1 (sv)
GB (1) GB2111601B (sv)
IT (1) IT1156141B (sv)
SE (1) SE453417B (sv)

Families Citing this family (86)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH663254A5 (de) * 1983-06-06 1987-11-30 Jakob Huber Gasturbinen-triebwerk mit kohlenstaubfeuerung.
US4546605A (en) * 1983-12-16 1985-10-15 United Technologies Corporation Heat exchange system
US4715779A (en) * 1984-12-13 1987-12-29 United Technologies Corporation Bleed valve for axial flow compressor
US4698964A (en) * 1985-09-06 1987-10-13 The Boeing Company Automatic deflector for a jet engine bleed air exhaust system
US4896510A (en) * 1987-02-06 1990-01-30 General Electric Company Combustor liner cooling arrangement
US4827713A (en) * 1987-06-29 1989-05-09 United Technologies Corporation Stator valve assembly for a rotary machine
FR2640685B1 (fr) * 1988-12-15 1991-02-08 Snecma Vanne de decharge de compresseur de turboreacteur
US5123240A (en) * 1990-03-19 1992-06-23 General Electric Co. Method and apparatus for ejecting foreign matter from the primary flow path of a gas turbine engine
US5059093A (en) * 1990-06-07 1991-10-22 United Technologies Corporation Compressor bleed port
CA2062887A1 (en) * 1991-04-22 1992-10-23 Franklin E. Miller Heat exchanger system
US5201801A (en) * 1991-06-04 1993-04-13 General Electric Company Aircraft gas turbine engine particle separator
GB2259328B (en) * 1991-09-03 1995-07-19 Gen Electric Gas turbine engine variable bleed pivotal flow splitter
US5515673A (en) * 1991-10-23 1996-05-14 Societe Nationale D'etude Et De Construction De Moteurs D'aviation "S.N.E.C.M.A" Device for controlling the opening and closing of discharge valves of a turbojet engine
US5211003A (en) * 1992-02-05 1993-05-18 General Electric Company Diffuser clean air bleed assembly
US5261228A (en) * 1992-06-25 1993-11-16 General Electric Company Apparatus for bleeding air
DE4326799A1 (de) * 1993-08-10 1995-02-16 Abb Management Ag Vorrichtung zur Sekundärluftentnahme aus einem Axialverdichter
US5623820A (en) * 1995-02-03 1997-04-29 The Boeing Company Flow control apparatus for gas turbine engine installation pressure relief doors
DE19632038A1 (de) * 1996-08-08 1998-02-12 Asea Brown Boveri Vorrichtung zur Abscheidung von Staubpartikeln
US6179943B1 (en) 1997-07-30 2001-01-30 The Boeing Company Method for forming a composite acoustic panel
US5975237A (en) * 1997-07-30 1999-11-02 The Boeing Company Reinforcing structure for engine nacelle acoustic panel
US6129311A (en) * 1997-07-30 2000-10-10 The Boeing Company Engine nacelle outer cowl panel with integral track fairings
US6173807B1 (en) 1998-04-13 2001-01-16 The Boeing Company Engine nacelle acoustic panel with integral wedge fairings and an integral forward ring
DE19959596A1 (de) * 1999-12-10 2001-06-13 Rolls Royce Deutschland Abblaseventil eines Verdichters, insbesondere für ein Zweistrahl-Flugtriebwerk
FR2823532B1 (fr) * 2001-04-12 2003-07-18 Snecma Moteurs Systeme de decharge pour turboreacteur ou turbopropulseur a commande simplifiee
US6565313B2 (en) * 2001-10-04 2003-05-20 United Technologies Corporation Bleed deflector for a gas turbine engine
GB0206880D0 (en) * 2002-03-23 2002-05-01 Rolls Royce Plc A vane for a rotor arrangement for a gas turbine engine
US6755025B2 (en) 2002-07-23 2004-06-29 Pratt & Whitney Canada Corp. Pneumatic compressor bleed valve
US7147426B2 (en) * 2004-05-07 2006-12-12 Pratt & Whitney Canada Corp. Shockwave-induced boundary layer bleed
JP4279245B2 (ja) * 2004-12-06 2009-06-17 本田技研工業株式会社 ガスタービンエンジン
WO2006091138A1 (en) * 2005-02-25 2006-08-31 Volvo Aero Corporation A bleed structure for a bleed passage in a gas turbine engine
US7581397B2 (en) * 2005-08-26 2009-09-01 Honeywell International Inc. Diffuser particle separator
US7387489B2 (en) * 2005-10-17 2008-06-17 Honeywell International Inc. Bleed valve outlet flow deflector
US7624581B2 (en) * 2005-12-21 2009-12-01 General Electric Company Compact booster bleed turbofan
US20080044273A1 (en) * 2006-08-15 2008-02-21 Syed Arif Khalid Turbomachine with reduced leakage penalties in pressure change and efficiency
US20080046407A1 (en) * 2006-08-16 2008-02-21 Microsoft Corporation Application search interface
GB0617769D0 (en) 2006-09-09 2006-10-18 Rolls Royce Plc An engine
FR2926337B1 (fr) * 2008-01-14 2013-12-06 Snecma Aube directrice de sortie pour un turboreacteur d'avion et turboreacteur comportant cette aube
US8826641B2 (en) * 2008-01-28 2014-09-09 United Technologies Corporation Thermal management system integrated pylon
GB0809336D0 (en) 2008-05-23 2008-07-02 Rolls Royce Plc A gas turbine engine arrangement
FR2931886B1 (fr) * 2008-05-29 2011-10-14 Snecma Collecteur d'air dans une turbomachine.
GB2467120B (en) * 2009-01-21 2013-05-15 Rolls Royce Plc A gas Turbine engine
GB2467121B (en) * 2009-01-21 2011-03-30 Rolls Royce Plc A gas turbine engine
US20110265490A1 (en) * 2010-04-30 2011-11-03 Kevin Samuel Klasing Flow mixing vent system
US20110274537A1 (en) * 2010-05-09 2011-11-10 Loc Quang Duong Blade excitation reduction method and arrangement
GB201015743D0 (en) * 2010-09-21 2010-10-27 Rolls Royce Plc Bleed valve
US20120070271A1 (en) 2010-09-21 2012-03-22 Urban Justin R Gas turbine engine with bleed duct for minimum reduction of bleed flow and minimum rejection of hail during hail ingestion events
US8935926B2 (en) 2010-10-28 2015-01-20 United Technologies Corporation Centrifugal compressor with bleed flow splitter for a gas turbine engine
FR2982588B1 (fr) * 2011-11-10 2013-11-22 Aircelle Sa Panneau composite a ecope de prelevement integree
US8430202B1 (en) 2011-12-28 2013-04-30 General Electric Company Compact high-pressure exhaust muffling devices
DE102012007130A1 (de) 2012-04-10 2013-10-10 Rolls-Royce Deutschland Ltd & Co Kg Fluggasturbine mit einem Entlastungskanal in einem Leitschaufelfußelement eines Nebenstromkanals
US8511096B1 (en) 2012-04-17 2013-08-20 General Electric Company High bleed flow muffling system
US9399951B2 (en) 2012-04-17 2016-07-26 General Electric Company Modular louver system
US8550208B1 (en) 2012-04-23 2013-10-08 General Electric Company High pressure muffling devices
US9638201B2 (en) * 2012-06-20 2017-05-02 United Technologies Corporation Machined aerodynamic intercompressor bleed ports
US9528391B2 (en) * 2012-07-17 2016-12-27 United Technologies Corporation Gas turbine engine outer case with contoured bleed boss
US20140338360A1 (en) * 2012-09-21 2014-11-20 United Technologies Corporation Bleed port ribs for turbomachine case
US9879599B2 (en) * 2012-09-27 2018-01-30 United Technologies Corporation Nacelle anti-ice valve utilized as compressor stability bleed valve during starting
US9328735B2 (en) * 2012-09-28 2016-05-03 United Technologies Corporation Split ring valve
US9518513B2 (en) 2012-10-12 2016-12-13 General Electric Company Gas turbine engine two degree of freedom variable bleed valve for ice extraction
US9982598B2 (en) 2012-10-22 2018-05-29 General Electric Company Gas turbine engine variable bleed valve for ice extraction
US9541003B2 (en) 2013-02-23 2017-01-10 Rolls-Royce Corporation Air particle separator
WO2014143296A1 (en) * 2013-03-14 2014-09-18 United Technologies Corporation Splitter for air bleed manifold
US9623354B2 (en) 2013-11-21 2017-04-18 General Electric Company System for extracting matter through variable bleed valves in turbines
FR3018096B1 (fr) * 2014-03-03 2019-03-29 Safran Aircraft Engines Conduit de decharge pour une turbomachine
US10352248B2 (en) 2014-10-01 2019-07-16 United Technologies Corporation Synchronized air modulating system
US9835043B2 (en) * 2014-10-01 2017-12-05 United Technologies Corporation Guided binding-resistant actuation apparatus and method
US10837313B2 (en) * 2014-12-15 2020-11-17 Raytheon Technologies Corporation Gas turbine engines with heated cases
US9909497B2 (en) * 2015-05-07 2018-03-06 United Technologies Corporation Combined stability and customer bleed with dirt, water and ice rejection
US10287992B2 (en) 2015-08-26 2019-05-14 General Electric Company Gas turbine engine hybrid variable bleed valve
US10196982B2 (en) 2015-11-04 2019-02-05 General Electric Company Gas turbine engine having a flow control surface with a cooling conduit
US10995666B2 (en) 2015-11-13 2021-05-04 General Electric Company Particle separators for turbomachines and method of operating the same
JP6689105B2 (ja) * 2016-03-14 2020-04-28 三菱重工業株式会社 多段軸流圧縮機及びガスタービン
US10208676B2 (en) 2016-03-29 2019-02-19 General Electric Company Gas turbine engine dual sealing cylindrical variable bleed valve
US10208628B2 (en) 2016-03-30 2019-02-19 Honeywell International Inc. Turbine engine designs for improved fine particle separation efficiency
US20180135516A1 (en) 2016-11-16 2018-05-17 Honeywell International Inc. Scavenge methodologies for turbine engine particle separation concepts
US10934943B2 (en) 2017-04-27 2021-03-02 General Electric Company Compressor apparatus with bleed slot and supplemental flange
US20190055889A1 (en) * 2017-08-17 2019-02-21 United Technologies Corporation Ducted engine compressor bleed valve architecture
US10816014B2 (en) 2018-07-25 2020-10-27 Honeywell International Inc. Systems and methods for turbine engine particle separation
US11125168B2 (en) 2018-10-24 2021-09-21 Raytheon Technologies Corporation Dirt mitigation in a gas turbine engine
US11261800B2 (en) 2018-10-24 2022-03-01 Raytheon Technologies Corporation Adaptive bleed schedule in a gas turbine engine
FR3094043B1 (fr) * 2019-03-18 2022-07-08 Safran Aircraft Engines Prélèvement de puissance sur corps BP et système d’évacuation de débris
US11713722B2 (en) 2020-05-08 2023-08-01 Rolls-Royce Corporation Gas turbine engine compressor particulate offtake
FR3129442A1 (fr) * 2021-11-24 2023-05-26 Safran Aircraft Engines Compresseur centrifuge muni d’un dispositif d’extraction de particules ingérées
US11585269B1 (en) 2022-05-06 2023-02-21 Pratt & Whitney Canada Corp. Apparatus for removing particulate matter from bleed gas
US11821363B1 (en) 2022-05-06 2023-11-21 Pratt & Whitney Canada Corp. Apparatus for removing particulate matter from bleed gas and gas turbine engine including same
US11731778B1 (en) 2022-05-13 2023-08-22 Pratt & Whitney Canada Corp. Apparatus for removing particulate matter from bleed gas

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2986231A (en) * 1957-02-11 1961-05-30 United Aircraft Corp Compressed air bleed and separation
FR1232667A (fr) * 1958-08-05 1960-10-11 Rolls Royce Soupape annulaire
US3108767A (en) * 1960-03-14 1963-10-29 Rolls Royce By-pass gas turbine engine with air bleed means
GB936635A (en) * 1961-04-21 1963-09-11 Rolls Royce Multi-stage axial-flow compressor
GB987625A (en) * 1963-10-14 1965-03-31 Rolls Royce Improvements in or relating to axial flow compressors, for example for aircraft gas turbine engines
US3680309A (en) * 1969-09-25 1972-08-01 Garrett Corp Two-spool auxiliary power unit and control means
US3638428A (en) * 1970-05-04 1972-02-01 Gen Electric Bypass valve mechanism
DE2247400C2 (de) * 1972-09-27 1975-01-16 Motoren- Und Turbinen-Union Muenchen Gmbh, 8000 Muenchen Vorrichtung zum Abblasen von verdichteter Luft aus einem Verdichter eines Gasturbinenstrahltriebwerks
US4055946A (en) * 1976-03-29 1977-11-01 United Technologies Corporation Twin-spool gas turbine power plant with means to spill compressor interstage airflow
US4086761A (en) * 1976-04-26 1978-05-02 The Boeing Company Stator bypass system for turbofan engine
FR2359982A1 (fr) * 1976-07-28 1978-02-24 Snecma Valve de mise en communication de deux espaces separes par une paroi
GB2014663B (en) * 1978-02-18 1982-05-06 Rolls Royce Gas turbine ducted fan engine
FR2438157A1 (fr) * 1978-10-05 1980-04-30 Alsthom Atlantique Grille d'aubes pour turbine ou compresseur
US4791783A (en) * 1981-11-27 1988-12-20 General Electric Company Convertible aircraft engine

Also Published As

Publication number Publication date
SE8206769D0 (sv) 1982-11-26
GB2111601B (en) 1984-11-28
FR2518169B1 (fr) 1985-11-15
JPH0413526B2 (sv) 1992-03-10
IT8224728A0 (it) 1982-12-14
GB2111601A (en) 1983-07-06
JPS58106134A (ja) 1983-06-24
DE3243279A1 (de) 1983-06-23
DE3243279C2 (sv) 1992-02-27
IT1156141B (it) 1987-01-28
FR2518169A1 (fr) 1983-06-17
SE453417B (sv) 1988-02-01
US4463552A (en) 1984-08-07

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