EP1645727A1 - Dispositif de guidage d'une machine à fluide avec pales réglables à ressort - Google Patents

Dispositif de guidage d'une machine à fluide avec pales réglables à ressort Download PDF

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Publication number
EP1645727A1
EP1645727A1 EP04405627A EP04405627A EP1645727A1 EP 1645727 A1 EP1645727 A1 EP 1645727A1 EP 04405627 A EP04405627 A EP 04405627A EP 04405627 A EP04405627 A EP 04405627A EP 1645727 A1 EP1645727 A1 EP 1645727A1
Authority
EP
European Patent Office
Prior art keywords
leg spring
leg
guide
spring
adjusting lever
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Withdrawn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
EP04405627A
Other languages
German (de)
English (en)
Inventor
Josef Bättig
Adrian Kopp
Joel Schlienger
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.)
Accelleron Industries AG
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
Priority to EP04405627A priority Critical patent/EP1645727A1/fr
Priority to PCT/CH2005/000526 priority patent/WO2006037242A1/fr
Publication of EP1645727A1 publication Critical patent/EP1645727A1/fr
Withdrawn legal-status Critical Current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
    • F01D17/00—Regulating or controlling by varying flow
    • F01D17/10—Final actuators
    • F01D17/12—Final actuators arranged in stator parts
    • F01D17/14—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits
    • F01D17/16—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits by means of nozzle vanes
    • F01D17/165—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits by means of nozzle vanes for radial flow, i.e. the vanes turning around axes which are essentially parallel to the rotor centre line
    • 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
    • F05D2220/00—Application
    • F05D2220/40—Application in turbochargers
    • 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
    • F05D2260/30—Retaining components in desired mutual position

Definitions

  • the invention relates to the field of turbomachines.
  • It relates to the guide of a turbomachine with rotatably mounted, adjustable guide vanes and an exhaust gas turbocharger with such a guide.
  • Exhaust gas turbines for example turbochargers, are used in conjunction with an internal combustion engine.
  • the exhaust gas from the internal combustion engine is used as a drive means for driving the turbine wheel.
  • the turbine wheel is connected by a shaft to the compressor wheel, with which the intake air to be supplied to the internal combustion engine is compressed.
  • adjustable turbine geometries can be used instead of fixed flow grids (nozzle ring) in the exhaust gas turbine. In this case, can be adjusted by an adjustment mechanism, the angle of Turbinenleitschaufein the respective operating point.
  • a VTG device typically includes a plurality of vanes mounted in a bearing housing and an adjustment mechanism for rotating the vanes.
  • VTG devices are described for example in EP 0 226 444 or DE 43 09 636.
  • the guide vanes of an exhaust gas turbine which are heated very much during operation, must be installed with appropriate clearance in the bearing bushes, so they do not jam. For the same reason, the entire VTG adjustment mechanism must have enough clearance to function.
  • the game can be in the radial bearing points of the vanes and between the lever and Leitschaufelschaft sometimes lead to Schwingungsreibverschleiss (fretting) at the various contact and bearing surfaces, which can be caused for example by operational vibration of the bearing housing or by variable flow forces.
  • the object of the invention is to improve an adjusting device for a guide device of a turbomachine to the effect that the individual parts can interact largely without play in the operation.
  • the leg spring engages with one leg on the bearing housing and the adjusting lever.
  • the unit of lever and vane is additionally braced against the bearing housing, i. the guide vane shaft rests with a positive bearing force in the bearings.
  • the adjusting lever which is connected to an adjusting element (adjusting ring) and adjustable over this, is pressed by the spring force of the leg spring against the adjusting element, so that a positive contact force acts also in this contact point.
  • the inventive bracing of the guide device with a leg spring ensures that the unit of lever and vane in itself, and with respect to the surrounding, cooperating with this unit parts is free of play.
  • the forces acting on adjusting the vanes on the unit are greater than the spring forces exerted by the leg spring, so that the used by the dimensioning of Mais Kunststofft game used during adjustment and the guide can be adjusted without jamming.
  • torsion springs of opposite turn orientation and correspondingly opposite can be used Spring forces are used, so that reduce the adjusting forces counteracting spring forces in the sum, or practically cancel.
  • inventive bracing does not hinder the operation of the adjustable guide device, so that would not have to be used as stronger drives for the adjustment.
  • the turbine wheel includes a hub 12 and blades 11 mounted thereon or integrally formed with the hub.
  • a baffle is disposed in the flow channel leading to the blades.
  • the guide comprises adjustable vanes 31 for regulating the flow of exhaust gas.
  • the guide vanes are rotatably mounted with a Leitschaufelschaft 32 in the bearing points 33 of a bearing housing 22.
  • the guide blades 31 can be rotated about the axis of the guide blade shaft 32 via an adjustment lever 4.
  • the lever has 41 effective areas on both sides of the elongated shaft.
  • this is on the side of the Leitschaufelschaftsschaft a recess 42 which is positively connected to the Leitschaufelschaft.
  • this is a recess 43, in which an extension of the adjusting ring 6 engages to reciprocate the adjusting lever according to the arrows shown.
  • the contacts of both effective areas have a minimal play to allow for about thermal expansion in operation, without generating large material stresses.
  • a leg spring 5 is clamped between the bearing housing 22, the guide blade shank 32 and the adjusting lever 4.
  • the leg spring 5 shown in detail in FIG. 3 is arranged with its windings 51 coaxial to the guide blade shank 32.
  • the leg spring is supported with a first bend 53 at the end of a first leg 52 on the bearing housing.
  • With a second bend 55 at the end of a second leg 54 the leg spring engages behind the shaft 41 of the adjusting lever 4.
  • An additional bend 56 on the second bend 55 serves as an assembly aid and ensures in operation that the leg spring does not slide from the adjusting lever.
  • leg spring is thus able to compensate for both the cold and the operating clearance of all movable or joined parts of the adjusting mechanism.
  • the applied when adjusting a plurality of vanes adjustment of the adjusting ring despite the torsion springs is not too large, and thus this force when opening and closing the vanes remains about the same size, the torsion springs, for example, alternately open in the opposite direction, or Windings of the torsion springs to be wound in opposite directions.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Turbines (AREA)
  • Supercharger (AREA)
EP04405627A 2004-10-07 2004-10-07 Dispositif de guidage d'une machine à fluide avec pales réglables à ressort Withdrawn EP1645727A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP04405627A EP1645727A1 (fr) 2004-10-07 2004-10-07 Dispositif de guidage d'une machine à fluide avec pales réglables à ressort
PCT/CH2005/000526 WO2006037242A1 (fr) 2004-10-07 2005-09-05 Dispositif de guidage d'une turbomachine dotee d'aubes directrices mobiles a ressort

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP04405627A EP1645727A1 (fr) 2004-10-07 2004-10-07 Dispositif de guidage d'une machine à fluide avec pales réglables à ressort

Publications (1)

Publication Number Publication Date
EP1645727A1 true EP1645727A1 (fr) 2006-04-12

Family

ID=34932309

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04405627A Withdrawn EP1645727A1 (fr) 2004-10-07 2004-10-07 Dispositif de guidage d'une machine à fluide avec pales réglables à ressort

Country Status (2)

Country Link
EP (1) EP1645727A1 (fr)
WO (1) WO2006037242A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008055930A1 (fr) * 2006-11-10 2008-05-15 Bosch Mahle Turbo Systems Gmbh & Co. Kg Turbocompresseur à géométrie d'ajustement variable
WO2008129274A3 (fr) * 2007-04-18 2009-01-22 Imp Innovations Ltd Turbocompresseur à régulation passive
WO2021259862A1 (fr) * 2020-06-23 2021-12-30 Abb Switzerland Ltd. Couronne directrice modulaire pour un étage de turbine d'une turbomachine

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3059900A (en) * 1960-11-15 1962-10-23 Chrysler Corp Gas turbine engine interstage inner shroud suspension
DE2029859A1 (de) * 1970-06-18 1972-02-03 Motoren Turbinen Union Verstell Leitapparat fur Turbomaschi nen
US4695220A (en) * 1985-09-13 1987-09-22 General Electric Company Actuator for variable vanes
DE4213716A1 (de) * 1992-04-25 1993-10-28 Asea Brown Boveri Axialdurchströmte Turbine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3059900A (en) * 1960-11-15 1962-10-23 Chrysler Corp Gas turbine engine interstage inner shroud suspension
DE2029859A1 (de) * 1970-06-18 1972-02-03 Motoren Turbinen Union Verstell Leitapparat fur Turbomaschi nen
US4695220A (en) * 1985-09-13 1987-09-22 General Electric Company Actuator for variable vanes
DE4213716A1 (de) * 1992-04-25 1993-10-28 Asea Brown Boveri Axialdurchströmte Turbine

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008055930A1 (fr) * 2006-11-10 2008-05-15 Bosch Mahle Turbo Systems Gmbh & Co. Kg Turbocompresseur à géométrie d'ajustement variable
WO2008129274A3 (fr) * 2007-04-18 2009-01-22 Imp Innovations Ltd Turbocompresseur à régulation passive
JP2010525209A (ja) * 2007-04-18 2010-07-22 インペリアル・イノベ−ションズ・リミテッド 受動制御ターボチャージャー
JP2013227981A (ja) * 2007-04-18 2013-11-07 Imperial Innovations Ltd 受動制御ターボチャージャー
US9388707B2 (en) 2007-04-18 2016-07-12 Imperial Innovations Limited Passively controlled turbocharger
WO2021259862A1 (fr) * 2020-06-23 2021-12-30 Abb Switzerland Ltd. Couronne directrice modulaire pour un étage de turbine d'une turbomachine

Also Published As

Publication number Publication date
WO2006037242A1 (fr) 2006-04-13

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